title: Antireflection and self-cleaning properties of a moth-eye-like surface coated with TiO2 particles.
abstract: Poly(ethylene terephthalate) (PET) films with a moth-eye-like surface are coated with TiO(2) particles to form self-cleaning antireflective films. The use of a TiO(2) suspension of high concentration to coat the PET surface produces a thicker TiO(2) layer with smaller pores, whereas a low concentration of a TiO(2) suspension gives a thinner layer of TiO(2) with larger pores. The PET films coated with TiO(2) particles exhibit a high transmittance of 76-95% and almost no absorption in the range of 400-800 nm. The PET films coated with a TiO(2) suspension with a concentration of ≥2 vol % exhibit superhydrophilicity after irradiation with UV light. After irradiation, the superhydrophilic nature is retained for at least 18 days. The TiO(2)-coated PET films showed the ability to decompose methylene blue under UV irradiation.
authors.affiliation: Photocatalyst Group, KSP Building East 412, Kanagawa Academy of Science and Technology, 3-2-1 Sakado, Takatsu-ku, Kawasaki, Kanagawa 213-0012, Japan. pg-nakata@newkast.or.jp
authors.forename: Kazuya
authors.initials: K
authors.lastname: Nakata
authors.forename: Munetoshi
authors.initials: M
authors.lastname: Sakai
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Ochiai
authors.forename: Taketoshi
authors.initials: T
authors.lastname: Murakami
authors.forename: Katsuhiko
authors.initials: K
authors.lastname: Takagi
authors.forename: Akira
authors.initials: A
authors.lastname: Fujishima